Flutter

[skylinesrus]

hi guys

on the weekend i did a DIY on my r34 gtt stock bov

we cut a coke can into the shape of the BOV as a gasket to block off airflow causing it to flutter but now it is back firing pritty regularly

y is it back firing so much ?

and how much damage am i causing to the turbo?

thank u =)

Edited July 15, 2007 by skylinesrus

[LTHLRB]

running leaner/richer?

having a turbo "fluttering" with no bov wont cause damage, have had mine doing that on 10+psi for nearly 2 years...

[KISIN]

  skylinesrus said:

hi guys

on the weekend i did a DIY on my r34 gtt stock bov

we cut a coke can into the shape of the BOV as a gasket to block off airflow causing it to flutter but now it is back firing pritty regularly

y is it back firing so much ?

and how much damage am i causing to the turbo?

thank u =)

your car will also stall.

I did the coke can thing and undid it. Its crap. Get a HKS SSQV if you want flutter.

[Ryanrb25]

The afm is expecting air (from plum back bov) to be returned to the air flow, so when you stop that air being plummed back into the air flow the air flow metre doesnt know this and just assumes everything is normal, hence thinking there is more air there than there really is, therefore keeping the same amount of fuel for less air, causing it to run rich. hope that made sence

[burgO.]

I just blanked my R33 bov off and it back fires on occasion but i wouldn't be concerned, doesn't make my car stall ever and it runs fine.

[Rav]

i block off just the hose to the bov when i did it, My car ran like SH*t. And when i came to a stop the revs just go right down and nearly stall.

[Rav]

  Ryanrb25 said:

The afm is expecting air (from plum back bov) to be returned to the air flow, so when you stop that air being plummed back into the air flow the air flow metre doesnt know this and just assumes everything is normal, hence thinking there is more air there than there really is, therefore keeping the same amount of fuel for less air, causing it to run rich. hope that made sence

So if u put the afm in the cooler piping do you rekkin it would run beta?

[Ryanrb25]

not too sure but the thing is...people have done this but the AFM isn't designed to be placed under pressure, its just plastic, and excess heat to this plastic can cause it to become brital. The afm relies on an accurate reading of resistance measured by a very thin wire. Any excess heat to this could cause improper readings, hence different air/fuel ratio....probably wouldnt be f**k all but there's no point just for a flutter and bad economy.

[TTT]

R34, coke can mod..

never thought they would be used in the same sentence.

nice ghetto mod.

[Habler]

you have to be kidding me..........

[Gazee]

LOL

it works... but wouldn't recommend it on a r33 with the ceramic wheels..

blew mine out my exaust pipe and also straight into the intercooler..

i don't see any issue with a steel wheel type turbo

edit: i have fixed this up cos people can't seem to understand wtf i was saying...

[ricsvtr]

  Gazee said:

LOL

it works... but wouldn't recommend it on a r33 with the ceramic wheels..

blew mine out my exaust pipe and straight into the intercooler..

i don't see any issue with a steel wheel type turbo

Err how is that possible? Is your exhaust connected to your intercooler?

[_8OO5TED_]

I found this quite handy....

http://www.calaisturbo.com.au/showthread.php?t=111492

[Yidz]

Ive got a creaming soda can on mine I blocked the old blow off valve, and have a new one welded on. People told me it would run like a bag of shit but it actually runs a lot better than what it did before and hasnt stalled once on me

[TTT]

  Gazee said:

LOL

it works... but wouldn't recommend it on a r33 with the ceramic wheels..

blew mine out my exaust pipe and straight into the intercooler..

i don't see any issue with a steel wheel type turbo

:laughing-smiley-014:

Luckily it didn't go the other way and end up in your sump hey? or even worse, in the flux capacitor.

[ssshonky]

aah.. school holidays

if and I stress IF .. your serious about this make sure your aware of the possible damage it might do

also if you REALLY want to do this .. least give the 34 a bit of respect and cut a bit of 3mm Ally plate and paint it black .

on a LOT of cars you will get flutter if you back off on low revs -

at full throttle the BOV is designed to stop air " ramming up against " the throttle body and traveling back past the turbo wheel

[ricsvtr]

hahah flux capacitor... skylines sure are hitech

Edited July 16, 2007 by ricsvtr

[GTL05T]

interesting topic

can someone post a pic of a coke can on bov lol

how does this actually work :S

[Modena]

I dont see how this will aid any fuel economy or make your car more reliable. You must be 18 yo.

[Bliksem]

lol wtf @ the flutter/spooling threads popping up recently